Hot-air furnace.



" No. 718,980. PATBNTED JAN. 27, 19oa. y

W. H. UHAPPBLL. HOT AIR FURNAGB.

vAPPLICATION FILED 00T. 30, 1902.

UNTTr; STATES PATENT GFFICE.'

WILLIAM HENRY CHAPPELL, OF MORENCI, MICHIGAN.

HOT-AIR FURNACE.

SPECIFICATION forming part of Letters Patent No. 718,980, dated January 27,

Application filed October 30,1902. Serial No. 129,452. (No model.)

To all whom, it' may concern.:

Be it known that I, WTLLIAMHENRY CHAP- PELL, a citizen of the United States, residing at Morenci, in the county of Lenawee and State of Michigan, have invented certain new and useful Improvements in Hot-Air Furnaces; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to hot-air furnaces, and has for its object to improve the con struction of furnaces now in use by increasing the heating and radiating capacity of the same without increasing the consumption of fuel.

Another object is to provide a more perfect arrangement for controlling the draft and circulation of heat and products of cornbustion and to produce af urnace which will be simple in construction, durable in use, and comparatively inexpensive of production.

With these and. other objects in view the invention consists in the construction and arrangement of the parts, which will be hereinafter more fully described and claimed, reference being had to the accompanying drawings, in which- Figure 1 is a side viewof a furnace, showing the application of the invention, parts being broken away for clearer illustration. Fig. 2 is a rear view of the same. Fig. 3 is a horizontal section through the horizontal radiator and upper end of vertical radiator, and Fig.4 is a detail plan view of a wood-burning grate.

In the drawings, 1 denotes a furnace, and 2 a horizontal radiator arranged above the furnace-body and consisting of the front and rear smoke-boxes 3 and 4, connected by the parallel dues 5 and 5a. The front smoke-box 3 is above and in direct communication with the furnace ire-boxthrough a short neck or connection 6, in which is located a cut-od damper 7, controlled by a handle or lever 8, projecting through the front plate of the furnace.

The rear smoke-box 4 is in communication with the rear end of the furnace through the usual smoke-outlet 9. The smoke-box 4 is divided by a partition l0, thereby cutting o communication between the flues 5 and 5a at this end of the radiator. The part of the box 4 at the end of the iiue 5 is in communication with the upper end of a vertical radiator 12.

The radiator 12 consists of the upper ,and lower drums 13 and 14, connected by the parallel perpendicular iiues 15 and 15a. The drum 14 is provided on one of its ends with an extension 16, which is adapted to project through the brickwork of the furnace and is provided with a door 16 for cleaning out the radiator 12.

The drum 13 is provided with a cut-od or damper 17, which is located therein between the flues 15 and 15?. The end of said drum 13 adjacent to the upper end of the iue 15 is in communication with the box 4 of the radiator 2, while the opposite end of the said drum adjacent to the upper end of iiue 15 opens into the chimney.

The stem of the damper 17 has connected thereto an operating-rod 18, which projects forwardly and through the front plate of the furnace and is provided with a handle for operating the same. The forward end of the box 3 of the radiator 2 has formed therein au opening 19, which registers with a similar opening formed in the frontplate of the furnace and is closed by a door 20. This opening is for the purpose of cleaning out the radiator 2.

In Fig. 4 of the drawings I have shown a supplemental grate A, which is used in connection with the furnace when wood is used for fuel. This grate is of an area conforming to the fire-box and consists of a plate having a front grated portion B, which properly restricts the draft for this class of fuel.

In operation by closing the damper7 above the fire-box the smoke and products of combustion are caused to pass to the back of the furnace, then upwardly through the outlet 9 into the box 4, thence forwardly through the liuc 5 to the box 3 and then back through ue 5 to the other side ofboxv 4, and from there it passes into the drum 13 of the radiator12, from which it maybe allowed to pass directly to the chimney or upon closing the damper 17 it will be caused to pass downwardly through flue 15 into and through the lower drum 14, thence upwardly through Iiue 15a and out to the chimney, thus passing IOO through and heating a long and circuitous system of nues, which will radiate a great amount of heat that would otherwise have passed directly out with the smoke.

Should a direct draft be desired, as when coaling the furnace or for any other purpose, the damper 7 in the outlet immediately above the fire-box is opened, as is also the damper 17. The course of the smoke, dac., will now be directly through the Hue 5 into the drum 13 and through the same out into the chimney.

By the use of proper grates and proper regulation of the air-supply this furnace can be use to burn either hard or soft coal or Wood, as desired.

From the foregoing description, taken in connection with the accompanying drawings, the construction, operation, and advantages of my invention will be readily apparent, it is thought, Without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a furnace, the combination with a firebox, of 'a horizontal radiator provided with passages in communication at their front ends With the front of the fire box and closed against communication with each other at their rear ends, one of said passages having an outlet at its rear end and the other being in communication at its rear end with the rear of the fire-box, and a Vertical radiator consisting of upper and lower horizontal drums and Vertical pipes connecting them at their ends, the upperdrum com municating with the chimney on one side of its center and with the outlet of the horizontal radiator on the opposite side of its center, and a controlling-damper between the connection from the horizontal radiator and the chimney connection, substantially as set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witmesses.

VILLIAM HENRY CHAPPELL.

Witnesses:

GEORGE H. CHAPPELL, OLIVE E. HANNA. 

